怎么在Eclipse的PyDev中使用debug

craw的方法中有root_url这个参数吗？

没遇见过，你使用debug了吗

def craw(self,root_url):
        count = 1
        self.urls.add_new_url(root_url)
        while self.urls.has_new_url():
            try:
                new_url = self.urls.get_new_url()
                print('craw %d : %s' %(count,new_url))
                html_cont = self.downloader.download(new_url)
                new_urls,new_data = self.parser.parse(new_url,html_cont)
                self.urls.add_new_urls(new_urls)
                self.outputer.collect_data(new_data)

                if count == 10:
                    break
                count = count + 1
            except Exception as e:
                print('craw failed',e)    

        self.outputer.output_html()

在craw中有root_url这个参数吗？